William b



(No Model.)

W. B. MASON.

GOVERNOR.

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UNITE STATES PATENT Finca.,

VILLIAM B. MASON, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE MASONREGULATOR COMPANY, OF SAME PLACE.

GOVERNOR.

.SPECIFICATION forming part of Letters Patent No. 312,138, datedFebruary 10, 1885.

Application filed August 12, 1884. (No model) To @ZZ whom, it mayconcern.:

Be it known that I, WILLIAM B. Mason, of

Boston, county of Suffolk, State of Massachu- Y setts, have invented anImprovement in Governors, of which the following description, inconnection with the accompanying drawings, is a specilication, likeletters on the drawings representing like parts.

My invention relating to governors is intended as an improvement in agovernor of the class shown in Letters Patent No. 274,625, granted to meMarch 27, 1888, in which the engine to'loe governed actuates a pumpproducing a circulation of oil or other liquid, which in turn controlsthe admission of steam to the engine in accordance With the speed atwhich the said liquid is forced by the pump.

In another applicatiomNo. 107 ,170,vh'led September 24, 1883, I haveshown and described a governor operating upon the same principle as theone Vdescribed in the patent referred to, but differing therefrom in theconstruction and arrangement of the parts; and my present inventionconsists in some further modifications in the construction of the parts,and in additional elements whereby the operation is somewhat modified.

In both my previous inventions the mechanism by which the throttle orengine valve is directly controlled has its movements regulated by adashpot outside of the main reservoir containing the circulating liquidand pump by which it is forced; and one feature of the present inventionvconsists in a novel combination of the parts by which the said dash-potis inclosed within the main reservoir, and by which its e'eet on thevalve-actuating mechanism may be readily adj usted while the latter isin operation.

As describedin my former patent, the pump of the governor is adapted tobe connected directly with and actuated by the reciprocating parts of adirect-acting engine or steam pump,

the said governor pump thus responding to variations in the velocity ofmovement of the engine-piston at all points in its stroke.

When the apparatus is to be used in connection with a duplexpumping-engine in Which the strokes of one enginealternate with -myformer application. 'lower portion of the main casting, below the 85those of the other, if the governor-pump were 5o actuated by only one ofthe said engines, the interruption in its operation at the end of eachstroke would produce too large fluctuations in the valve-controllingmechanism unless some means were devised to prevent such iiuctuations.

My present invention also consist-s in means for preventing suchfluctuations, consisting, essentially, of a valve'by which the outowofthe pumped fluid is stopped at the moment 6o that its iniiow ceases,so that while the governor-pump is making a stroke it produces acirculation of the oil, by which the enginevalve is controlled inaccordance with the relation between the inflow and outflow of the iiuidto and from a chamber, or, in other words, in proportion to the amountat each moment Within the said chamber; but the moment that the inowceases the outflow also is stopped, so that the amount within the cham-7o ber, and consequently the condition of the engine-controlling valveremains unchanged until the next stroke of the governor-pump takesplace.

Figure 1 is a vertical section of a governor 7 5 embodying thisinvention; Fig. 2, a sectional detail on a plane at right angles to thatof Fig. 1. A

The main casting or reservoir c, provided with lateral chambers a', inline with one an- 8o i other, bored to receive the plunger b, isprovided with a transverse partition, a2, separating it into upper andlower chambers, as in The interior of the partition,is provided withprojections a3,bored to form passages c c', the former connecting thechambers a with the lower portion of the main reservoir, and the latterleading from the said chambers a to the chamber d above 9o the partitiona2. The passages c c are enlarged at their ends to receive thevalve-seats and valves e e', which operate the same as in my otherapplication referred to, so that when the plunger b is so reciprocateditfcauses oil or other liquid contained in the reservoir to be forced upthrough the passages c and c and valves e and e', which latter preventits return through the said passages c and c. The liquid thus forced,instead of passing directly into the chamber d, so as to act on thepiston h therein, as in the former application, enters a passage, g,formed by grooving the partition a2 beneath a plate, i, fitted withinthe chamber d. The liquid passes from the passage g into a passage, g,in the plate t', and acts on the under side of' a plug, k, which, whenin its lowest position, closes a passage, g2, leading from the one ginto the chamber d. When the liquid is forced up through one or theother of the valves e by the plunger b, it enters the passage g g andraises the plug k, thus opening the passage g2, through which it entersthe chamber d, tending to lift the piston h. The passage g above thecylindrical portion of the plug k communicates with the interior of thechamber d, and the upper portion of the said plug k constitutes a valvewhich, when in its lowest position, closes the upper end of the saidpassage g', preventing the escape of' liquid from the chamber d into thesaid passage, this being the normal condition while no liquid isentering the lower end of the said passage, so as to raise the plug k.When, however, the liquid is being forced upward by the plunger b,raising the plug 7c and entering the chamber d through the passage g2,the valve is raised and the upper end of the passage g communicates withthe interior of the chamber d, and also with an outlet passage, f, (seeFig. 2,) leading through the partition a2 into a boss or projection, a4,at-the under side thereof, provided with a valve or controlling device,`f, governing the outflow of liquid from the chamber d through thepassa-gef, from which it falls back into the lower portion of the mainreservoir, from which it is again pumped by the plungerb. The valve f isshown as consisting of a screw entering a threaded passage in the bossa, forming a continuation of the passage f, the said screw beinglongitudinally slotted,

as shown in Fig. 2, and regulating the escape of liquid in accordancewith the distance that the slotted portion projects outside of thethreaded passage, the liquid passing longitudinally through the slot andthen laterally out through the sides thereof where the slotted portionprojects from the threaded passage. The passage g2 is grooved at itsunder side, as shown at g5, Fig. 2, to afford a slight connectionbetween the passages g and g2 when the plugk is in its lowest position,so that the said plug will not entrap the liquid in the passage gbelowit, and thus prevent the valve from seating in the upper end of the saidpassage g. The plunger b is provided with apin, b', forming a guide fora ring, b2, connected with a forked arm, If, on a rock-shaft, b,actuated by a suitable arm or lever at the outside of the mainreservoir, as described in my former application, where these parts aremore fully shown. The piston h, made hollow at its lower side toconstitute an air-chamber, cushioning the effect of the liquid beneathit, is connect` ed with a rod, h', acting ona lever, h2, pivoted on anarm or bracket, h, and provided with a weight, h, the arm h5 of the saidlever being connected by a suitable rod or link, h6, with thethrottle-valve of the engine or other device controlling the applicationof power to the motor to be governed.

ln order to prevent too sudden movements of the valve-actuatingmechanism, a dash-pot is provided consisting of a cylinder, k2,supported within the chamber d, as shown, the stem h being continuedbelow the piston h, and provided with a secondary or controlling piston,k, fitting within the said cylinder k, which will be filled with aliquid. The stem 7L is made tubular, and provided with a lateralopening, 7c3, ,above the piston k, so that the liquid may pass throughthe said stem and opening as the piston k moves in conjunction with theone h, the controlling effect of the liquid in the dash-pot dependingonthe size of the said passage k3, which is regulated by a threaded rod,if, which may be operated by a suitable key or wrench applied at theupper end of the rod h, the adjustment being effected, if desired, whilethe apparatus is in operation. The rod h is provided with anotherlateral opening, lc, above the piston h, so that the liquid which may beforced up through the rod will escape into the space above the piston7L, and, together with the liquid which may leak around the piston hfrom the chamber d, will be returned to the lowerr'portion of the caseor reservoir through a suitable passage, m, (see Fig. 2,) provided forthis purpose. The upper portion of the stem k passes through an openingin the lever h2, which rests on a shoulder or collar, hl, on the saidrod. lf desired, the pump-chambers a may be connected by a duct orpassage, as described in my other application, and the operation issubstantially the same as in the said application, except that theoutflow from the chamber d is arrested the moment that the inflowthereto ceases, so that there will be no material change in the positionof the lever h2 after the plunger b lcomes to rest.

l claim* 1. In a governor, a reservoir and chamber and pump actuated bythe motor to be governed, producing a circulation of fluid from the saidreservoir to the said chamber, combined with a valve whereby the outflowof fluid from the chamber is stopped when the inflow ceases,substantially as and for the purpose described.

2. In a governor, a reservoir and chamber provided withconnecting-passages, combined with a pump actuated by the motor to begoverned, for forcing fluid from the said reservoir into the saidchamber, a return-passage from the chamber to the reservoir, and a valvecontrollingthe flow of fluid through the said return-passage, operatedby the fluid forced by the pump in its passage into the chamber,substantially as described.

IOO

IIO

3. In'a'governor, a reservoir and chamber and pump for forcing iiuidfrom the former .into the latter, combined with a piston in the =saidchamber actuated by the fluid therein,

:5 and a secondary piston and co-operating dashpot cylinder inclosedwithin the said chamber, substantially as described.

4. The main case provided with a partition separating it into a lowerreservoir and upper chamber, and a pump for forcing iiuid from the saidreservoir to the said chamber, combined with the plate z' in the saidchamber, having passages g and g2 for the iniowing duid, and a passagefor the outdowing i5 iiuid, and the plug and valve 7c, actuated by theiniiowing iiuid and controlling the outiiowing fluid, substantially asdescribed.

5. The reservoir, chamber, and pump, and the piston in the said chamberoperated by the pumped fluid, combined with the pistonrod adaptedI toactuate the motor-controlling valve or device, the secondary pistonconnected with the said rod, and the dash-pot cylinder co-operatingtherewith, inclosed with- .'2'5 in the said chamber, substantially asdescribed.

6. The reservoir, chamber, and pump, and the piston in the said chamberoperated by the pumped fluid, combined with the piston 3o and hollowpiston-rod provided with a lateral passage and the secondary piston, anddashpot cylinder and device controlling the flow TIO of liquid in thedash-pot cylinder through the said piston-rod, substantially asdescribed.

7. The main case divided by a partition 35 into a lower reservoir andupper chamber, and the pump, causingha circulation of fluid from theformer to the latter, combined with the piston in the said chamber,operated by the pumped fluid beneath it, and a return- 4o passage fromthe chamber above the piston to the reservoir for the liquid leakingaround 4 or passing by the said piston, substantially as described.

8. The main case divided by a partition 45 into a lower reservoir andupper chamber, and the pump causing a circulation of iluid from theformer to the latter, combined with the piston in the said chamber,operated by the pumped iiuid beneath it, and a return- 5o passage fromthe chamber below the piston, and valve f therein, consisting of alongitudinally slotted screw operating in a threaded passage andgoverning .the flow of iiuid in proportion to the length of the slotted55 portion outside the said passage, substantially as described.

In testimony whereof I have signed my name to this speciiication inpresence of two subscribing witnesses.

WM. B. MASON. Witnesses:

Jos. P. LIVERMORE, W. H. SIGsToN.

